Assuming the Bitcoin address shown in the previous news post was the only Bitcoin address used in this ransomware, it appears that they received a total of four 0.0001 BTC transactions, earning them about 15c based on the current BTC value of â‚¬383.79 / Bitcoin.
Unlike the Windows based ransomware where the PC's data may be the only copy most people have, I think it was pointless targeting users of NAS devices. Home users with a NAS mainly use it for sharing music and video across their network, such as with a home theatre PC, network media player, etc. Losing a terabyte of movies/music will just mean an inconvenience of having to download it all again. As for businesses, running a NAS without daily backups does not make sense. Even if this ransomware did not strike, they will just as likely lose their data some other way such as with a hard disk failure, flood damage or even a PC based ransomware that attacks network shares.